In southern Thailand, one business is growing as a result of the Covid-19 crisis: gold panning. With many Thais losing their jobs due to the pandemic, especially in the tourism sector, some are turning to traditional methods of finding gold. Thailand has fared comparatively well compared to other nations, recording only 93 Covid-19 deaths for a population of 69 million. But its borders have been closed for a year and there are strict quarantine rules for all inbound travellers. Our correspondents Didier Gruel, Constantin Simon, Aruna Popuri and Justin McCurry report.